Cited by 59Telomeres, Telomerase, and SenescenceHematopoietic Stem Cell TransplantationEffects of Radiation Exposure

Ionizing radiation-induced expression of INK4a/ARF in murine bone marrow-derived stromal cell populations interferes with bone marrow homeostasis.

Carbonneau, Cynthia L., Despars, Geneviève, Rojas-Sutterlin, Shanti, Fortin, Audrey, Le, Oanh, Hoang, Trang, Beauséjour, Christian M.·2012·Blood

Abstract

Alterations of the BM microenvironment have been shown to occur after chemoradiotherapy, during aging, and after genetic manipulations of telomere length. Nevertheless, whether BM stromal cells adopt senescent features in response to these events is unknown. In the present study, we provide evidence that exposure to ionizing radiation (IR) leads murine stromal BM cells to express senescence markers, namely senescence-associated β-galactosidase and increased p16(INK4a)/p19(ARF) expression. Long (8 weeks) after exposure of mice to IR, we observed a reduction in the number of stromal cells derived from BM aspirates, an effect that we found to be absent in irradiated Ink4a/arf-knockout mice and to be mostly independent of the CFU potential of the stroma. Such a reduction in the number of BM stromal cells was specific, because stromal cells isolated from collagenase-treated bones were not reduced after IR. Surprisingly, we found that exposure to IR leads to a cellular nonautonomous and Ink4a/arf-dependent effect on lymphopoiesis. Overall, our results reveal the distinct sensitivity of BM stromal cell populations to IR and suggest that long-term residual damage to the BM microenvironment can influence hematopoiesis in an Ink4a/arf-dependent manner.

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Crossref · 10.1182/blood-2011-06-361626

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Authors
Carbonneau, C. L., Despars, G., Rojas-Sutterlin, S., Fortin, A., Le, O., Hoang, T., & Beauséjour, C. M.
Affiliations
  • Centre Hospitalier Universitaire Sainte-Justine (CA)
  • Institut de recherche en immunologie et cancer, Université de Montréal, Montréal, QC
  • Centre de recherche du Centre Hospitalier Universitaire Ste-Justine,
  • Institute for Research in Immunology and Cancer (CA)
Venue
Blood
Published
2012-01-19
Volume
119
Issue
3
Pages
717-726
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W1985999015
Cited by
59
References
46
Citations by year
2025: 3 · 2024: 2 · 2023: 1 · 2022: 1 · 2021: 6 · 2020: 4 · 2019: 5 · 2018: 6 · 2017: 4 · 2016: 4 · 2015: 7 · 2014: 6 · 2013: 5 · 2012: 4
FWCI
3.27
Type
journal article
Language
en
Open access
closed
Locations
  • Blood (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canadian Institutes of Health Research (MOP-102709)
Topics
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Effects of Radiation Exposure
Keywords
ionizing radiation, mesenchymal stem cells, Ink4a/Arf, p16INK4a, p19ARF, cellular senescence, senescence-associated β-galactosidase, bone marrow microenvironment, bone marrow homeostasis, lymphocyte development, hematopoiesis
MeSH terms
Animals, Bone Marrow, Cell Differentiation, Female, Hematopoietic Stem Cells, Homeostasis, Mice, Inbred C57BL, Radiation, Ionizing, RNA, Messenger, Blotting, Western, Cellular Senescence, Stromal Cells, Apoptosis, Mice, Knockout, Cyclin-Dependent Kinase Inhibitor p16, ADP-Ribosylation Factor 1, Lymphopoiesis, Cell Proliferation, Mice, Real-Time Polymerase Chain Reaction

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